/Engine/Source/Editor/UnrealEd/Public/Commandlets/AssetRegistryGenerator.h
Saves all generated manifests for each target platform.
bool SaveManifests ( [FSandboxPlatformFile](API\Runtime\SandboxFile\FSandboxPlatformFile) & InSandboxFile, int64 InOverrideChunkSize, const TCHAR * InManifestSubDir )